'91 mini is kicking my ass

dd113

 
Joined
Jun 13, 2003
Messages
2,922
I took on a basket case at the shop. '91 4WD mini with 22RE. Old motor was shot but ran OK another shop replaced it with a crate 22RE. It will not throw a spark.

2 other shops looked at it and now I ended up with it.

New OEM wires
New OEM plugs
NEW OEM rotor
New OEM cap
New OEM ignightor
New OEM coil

It gets power to the coil and ignightor but will not throw a spark from the coil wire. The leads to the signal generator are new with the ignightor but the signal generator is original.

First question:
Can you meter the black and white wires from the connector to locations on the signal generator? I would think so and I get nothing leading me to think the generator is bad.
 

John Smith

In the garage
 
Joined
Jun 7, 2004
Messages
4,203
Location
Maryland
Have you checked the computer for any stored codes? Do you have a known good computer? You will not receive any spark unless the computer says so.

Now don't you like carbs and points better already. :)
 

dd113

 
Joined
Jun 13, 2003
Messages
2,922
NO luck on the 'puter but it should be OK the truck drove into the first shop. Currently no codes and NO I much perfer EFI
 

John Smith

In the garage
 
Joined
Jun 7, 2004
Messages
4,203
Location
Maryland
In that case I would check the primary and secondary resistance at the coil to make sure it is good or just swap a known good coil from another truck in and see what you get.

If when you put the truck back together you accidently let one of the coil terminals ground you may have damaged the coil or the igniter.

If the coil checks out then look at the igniter as your culprit. I do not know of any test procedure for the igniter.
 

patpend2000

 
 
Joined
Nov 20, 2003
Messages
183
What is the voltage of the battery you are trying to crank it with? On some EFI setups, the computer must see a minimum voltage before it will turn on the fuel pump or ignition.
 

bkfj40

SILVER Star
 
 
 
Joined
Apr 5, 2002
Messages
2,974
Location
shenandoah valley, va
I could send you the computer and coil from my '90 toy truck....oh wait, it doesn't have a computer and is diesel, my bad ;)

I concur with John, any chance you can find a known running truck with the computer and coil that are good? I bet a little electrical mishap at one of the other shops, but if you play your cards right, the tard that did it will soon work for you :)

bk
 
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